Ford F150 Pickup. Manual - part 1334

Fig. 32: Locating Left Radio Capacitor Connector 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 33: Locating Left Fuel Injection Supply Manifold 
Courtesy of FORD MOTOR CO. 

FUEL TANKS 

Removal & Installation (Front In-Bed Tank) 

1. Turn in the manual lockdown valve jackscrew on the rear in-bed fuel tank solenoid valve. See Fig. 7 . 

Disconnect the battery ground cable. Remove the in-bed tank assembly cover retaining bolts. See Fig. 
34 . Remove the in-bed tank assembly cover. Disconnect the electrical connector from the forward in-bed 
fuel tank solenoid valve (1). See Fig. 35 .  

2. Disconnect the high-pressure fuel line from the forward in-bed fuel tank solenoid valve (2). Disconnect 

the jumper fuel line from the forward in-bed fuel tank solenoid valve (3). Place identification marks on 

NOTE:

If removing the fuel tank for replacement of the fuel tank or the fuel tank 
solenoid valve, perform COMPRESSED NATURAL GAS FUEL TANK 
EVACUATING . If removing the fuel tank for replacement of lines or support 
straps, perform COMPRESSED NATURAL GAS FUEL LINE VENTING . See FUEL 
SYSTEM PRESSURE RELEASE . See Fig. 7 .

NOTE:

Numbers in parenthesis refer to numbers in illustration.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

the upper in-bed fuel tank straps and tank. Remove the upper in-bed fuel tank strap retaining bolts. See 
Fig. 36 . Remove the upper in-bed fuel tank straps. Position the heavy duty Floor Crane (014-00072), 
Separator Lift Bar (303-F054) and endless Lifting Sling (100-D008). Carefully raise and remove the 
forward in-bed fuel tank.  

3. To install, reverse removal procedure. Lubricate NEW "O" rings with 5W-30 engine oil. Align the 

identification marks on the upper in-bed fuel tank straps and tank. After installation is complete, natural 
gas fuel lines must be leak tested. Perform COMPRESSED NATURAL GAS LEAK TEST under 
FUEL SYSTEMS in SYSTEM & COMPONENT TESTING - CNG article.  

Fig. 34: Locating In-Bed Tank Assembly Cover Bolts 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 35: Locating Fuel Tank Solenoid Valve Electrical Connector & Fuel Lines 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG